2.write a class definition named book. the book class should have data attributes for a book’s title, the author’s name, and the publisher’s name. the class should also have the following: a. an _ _init_ _ method for the class. the method should accept an argument for each of the data attributes. b. accessor and mutator methods for each data attribute. c. an _ _str_ _ method that returns a string indicating the state of the object.